Drill bit Abraboro HSS conical 16.5 mm AB44516500 for metal

Abraboro HSS conical drill bit 16.5 mm is designed for controlled enlargement of holes, chamfering and creating tapered entries in metalworking tasks. Manufactured from high-speed steel (HSS), the conical geometry provides a gradual cutting profile that helps reduce burrs and facilitates alignment when enlarging or finishing holes. The tool is intended for use with hand drills and drill presses on steel and other metals in workshop, maintenance and fabrication environments.

Advantages

The HSS construction offers good wear resistance and heat tolerance during cutting, which supports longer life under typical drilling conditions in metal. The conical shape enables precise enlargement of existing holes and smooth deburring, reducing the need for additional finishing steps. The 16.5 mm diameter provides a defined taper size for tasks that require a specific entry profile or gradual hole increase. The bit works reliably in both portable drills and fixed drill presses when used at appropriate speeds and with proper clamping.

Suitable for

• Enlarging or reaming existing holes in steel and non-ferrous metals
• Creating tapered entries and chamfers before fastening or welding
• Deburring and finishing drilled openings to remove sharp edges
• Workshop maintenance and fabrication tasks using hand drills or drill presses

Key specifications

• Material: High-speed steel (HSS)
• Shape: Conical / tapered
• Nominal diameter: 16.5 mm
• Intended application: Metal drilling, chamfering, deburring
• Compatibility: Suitable for hand drills and drill presses

How to use

Select a suitable clamp or vise to secure the workpiece and choose appropriate rotational speed for HSS tooling and the metal being worked. Position the conical drill bit in the drill chuck, align it with the existing hole or marked center, and apply steady, controlled feed pressure while maintaining correct spindle speed. Use cutting fluid or coolant where applicable to reduce heat build-up and prolong tool life. Withdraw the bit periodically to clear swarf and inspect the tapered profile until the required size and finish are achieved.

Usage recommendations

Operate at moderate speeds appropriate for HSS in steel, use cutting fluid for improved cooling and chip evacuation, and ensure the workpiece is firmly clamped. Avoid excessive lateral force to prevent bit deflection and achieve a consistent tapered finish.